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Modbus 的代码
funcoesmodbus.bas
Attribute VB_Name = "FuncoesModBus"
'=======================================================
'Modulo de funcoes para comunicacao do protocolo ModBus
'Feito por Rodrigo Mendes Defende
'13/04/2009
rs485.c
/*********************************************
**项目:RS485 MODBUS C51程序(EE21学习板演示程序)
**作者：一线工人
**网站：电子工程师之家 www.eehome.cn
**备注：modbus协议，rs485通讯
*********************************************/
modbus rtu master demo cpu363.ini
[Status]
OpenState=0
[Builds]
2425=Saved_With
modbus.c
#include "p18f8490.h"
//#include "Parameter.h"
//#include "Com_parameter.h"
//#include "VARbits.h"
#include "pindefine.h"
#include "Parameter.h"
#include "variable.h"
void SendModbusData(unsig
main_uv2.bak
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,2, 0x0
File 1,1,
modbus.h
extern uint8 sendCount;
extern uint8 receCount;
extern uint8 sendPosi;
void beginSend(void);
void checkComm0Modbus(void);
void readCoil(void);
void readRegisters(void);
void forceSingle
modbus.c
#include "main.h"
//字地址 0 - 255 (只取低8位)
//位地址 0 - 255 (只取低8位)
/* CRC 高位字节值表 */
const uint8 code auchCRCHi[] = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x0
main.uv2
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,2, 0x0
File 1,1,